121534478 has 8 divisors (see below), whose sum is σ = 196324968. Its totient is φ = 56092824.

The previous prime is 121534471. The next prime is 121534499. The reversal of 121534478 is 874435121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121534471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2337176 + ... + 2337227.

It is an arithmetic number, because the mean of its divisors is an integer number (24540621).

Almost surely, 2^121534478 is an apocalyptic number.

121534478 is a deficient number, since it is larger than the sum of its proper divisors (74790490).

121534478 is a wasteful number, since it uses less digits than its factorization.

121534478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674418.

The product of its digits is 26880, while the sum is 35.

The square root of 121534478 is about 11024.2676854293. The cubic root of 121534478 is about 495.3359322235.

Adding to 121534478 its reverse (874435121), we get a palindrome (995969599).

The spelling of 121534478 in words is "one hundred twenty-one million, five hundred thirty-four thousand, four hundred seventy-eight".